As you obviously are aware of that, at least to the best of my knowledge, LEAP is Cisco Systems proprietary, I can tell you that I have come across some 3Com Wireless products that state in their specs they support LEAP. However, do not be surprised that it does not actually work, because they do not support it even though LEAP may be enabled somewhere in the ECB.
I think it's worth it giving it a try, though.
-regards,